dt-bindings: mmc: mmci: Add st,stm32-sdmmc2 compatible

Although this compatible is not used in kernel, as we use the common
MMCI driver, it is used by bootloaders. The U-Boot driver was merged
before the kernel driver and uses this compatible.

To avoid issues when aligning device tree files between kernel and
boot loader, the ST dedicated compatible is added to bindings file.

Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211210091834.28958-1-yann.gautier@foss.st.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/Documentation/devicetree/bindings/mmc/arm,pl18x.yaml b/Documentation/devicetree/bindings/mmc/arm,pl18x.yaml
index fbc866d9bb2f3deaba9026b1209746cb52ef83d4..f0a44b2cfa799ac3cd761c3cc2695ee3004d53ba 100644 (file)
--- a/Documentation/devicetree/bindings/mmc/arm,pl18x.yaml
+++ b/Documentation/devicetree/bindings/mmc/arm,pl18x.yaml
@@ -53,6 +53,12 @@ properties:
         items:
           - const: arm,pl18x
           - const: arm,primecell
+      - description: Entry for STMicroelectronics variant of PL18x.
+          This dedicated compatible is used by bootloaders.
+        items:
+          - const: st,stm32-sdmmc2
+          - const: arm,pl18x
+          - const: arm,primecell
 
   clocks:
     description: One or two clocks, the "apb_pclk" and the "MCLK"